Tent office



G. KLUMPP ELECTRIC COOKER Jan. 6, 194.

Filed June 19, 1945 J INVENTOR 07x05 Alum/ BY v E 2 I j q I ATTORNEY '2Patented Jan. 6, 1948 NI TED :S T OFFICE EEEGTRIC COOKER Gottlob Klumpp,Bronx, N ..-.Y. Applioationfinnew, 1945; Serial No: 600,285

2'3! claims. 3.], aThis'sinvention relates to electric cooking and 2 thelike: and is: particularly:concerned: with: an improved cooker usingelectric light bulbs as :the heating elements and 'operatingmainly byiradiant heat.

.rAn'obg'ect of-this invention is to provide-a simple and efiicient andthoroughlyseife-anddependable .apparatusfor. cooking=withelectricity. Afurther object is to provide for f the :efiicient use of heat iinbaking; broiling and-related cooking processes. further obj eot istoprovidea sturdy and e'fficient heat: devicewhich: uses electric lightbulbs-' -as the :heating orra'diating elements. These and other objectswill. be in part obvious and in= part pointed 'out below.

aThe: inventionl'accordinglyi consists in the fea- .tures of.construction, combinations of elements, :and arrangements of parts asWill 'be exemplified in thesstructure to -be hereinafter described andthe; scope of l the application of which will be in 'dieated inthefollowingclaims.

In the drawing:

Figure 1 is'a vertical section of one: embodiment of the invention;

Figu-re Z is a -side-elevation :partly in section l-showing a-rack whichmay 'be a part of the embodiment of:F igure 1; and,

:Figu-re' 3 is a side elevation of the upper shell and heating unit ofthat embodiment.

As compared with 'fiame ihe-ating apparatus, electric heaters areextremelyefiicient in-the consumption of energy. Some-electric heaters 1have high-temperatured resistance heating elements certainof which areof the hot-wire type and others of which are of the hotplate or hot-rodtype. Still other such heating-devices use a cond n iq d suhas.wateras:'thezresistance.el ment so that the heat is produced (Withinthe liquid. Electricli ht .bulbshave..als,o..been used as heaters. Thegeneral theory of these heaters haslbeen to heat insulate the entire:zone around :the heating element .and then ooncentrate the:heatingefiect. at onecpoint bringing the material'to'be heated assclosevto this-pointas possible.

The production of heat by a high-temperature element such as is used inthe usual type of electric stoves often results in burning materialswhich are being cooked. On the other hand, when the temperature of theair surrounding the materials being cooked is raised by heat insulatingthe space, the apparatus has been heavy and bulky and expensive tomanufacture. It is an object of the present invention to provide anelectric cooker which is efficient and dependable in .2 LuS8,-anduWhiCh.is light in weight" and inexpensive to'manufacture and operate.

:In: accordance with the present invent-ion, the materials totbecooked'are enclosed within a thin shell formed for example of metalsuchassheet aluminum,:thesurfaces of which are highly polishe'd andreflect-heat and lightrays. 'Ihe cooking-process 1 maybe of =any 'typesuch as" baking, 1 brolling boiling or frying; :the single R apparatusis thus adaptable to many uses.

Referring to Figure l of the drawing, a-casing is 'forme'd' by anuppershell 2 and a lower-- shell- 4, thelatter of Whichis enclosedWithina base shell 6. Shelli2has a head! at its bottom edge which 'fits--a seat 9 in'anenlarged portion at the-topof the' lower shell- 4.Theupperedgeof the'lower .shell is-alsoprovided Witha bead ll whichrests uponaibead I3 on the top edge of the baseshell 6. Mounted onthe-side wall of the lower shell l 'is-a porcelain 'base S inwhich ismounted an electric light bulb lfl. Bulb It! is positioned with itscenter at the centralvertical axis of shell 4 and hasansenvelope ofglass of a lowindeX'of-eX- pansion. similarlymounted near the top ofupper -shell 2 in a porcelain base I2 is anelectric light bulb l4.

'Lo-wer shell lhas an-annular-shoulder Ni near its-upper edge upon.which rests across-rack l8 formed :by two U-shaped members rivetedtogether by a single'rivet 2-0so that they maybe hinged together andpivoted one with respect to the other. Cross-rack l-8 carries astraightsided pan 22 and resting within this:pan isa grill 24 havinglegs 2 6. Abottom wall of -shell-"-4 is flat, and due to the'centralposition of bulb Ill, the major portion of the 'heat'from the l bulbradiates directly onto the' bottom of-pan 22, or is reflected 'fromtheshell to the pan. 'The polished surfaces of the shell prevent anysubstantial dissipation of heat to the outside atmosphere'an'd thebottom shell 6 provides a heat-insulating chamber around the lowershell.

Upper shell2 is alsoadaptedto direct heat in an efiicient manner toward,the panand. its polished surfaces prevent appreciable dissipation ofheat. The top wall of shell 2 is curved to provide a reflector, and thetop of the shell is of reduced diameter; thus, bulb I4 is centrallypositioned within an efficient heat-radiating unit. When both bulbs areenergized, the heat produced beneath the pan heats the bottom of the panwhile the heat produced by bulb I4 is directed against the food or othermaterials being cooked. Illustratively, bulb I4 is of the so-called sunlamp type so that the cooking process is accompanied by beneficialtreatment of the food.

Bulbs and M are separately energized by time controlled switches (notshown) so that either or both may be energized for specified times. Whenit is desirable to perform a cooking process such as baking, both bulbsare energized for the desired period of time so that the heat isdirected to the bottom of the pan as well as directly onto the food..For normal baking, grill 24 is removed, but food may be baked on thegrill. Broiling is performed using bulb l4 only with the food supportedby grill 24, and with pan 22 remaining relatively cool so that there isno burning of drippings. Boiling and frying may be with both bulbs orwith bulb I0 only, the materials being placed directly in pan 22. Whenmore than one container of materials is to be cooked at one time, rack24 is removed and a second pan (not shown but like pan 22) is placed inrack I8 on ledges 25; in this event, both bulbs are energized so thatthe materials are cooked evenly. With all of these cooking processes theheating efiect is of a nature and at such a rate that the materialsbeing cooked are not burned. Furthermore, with this apparatus the foodsare not dried out and they may be cooked without the addition of water.

Access may be had to the cooking space by merely lifting the upper shellaway from the lower shell. The upper shell is provided with a supportingbracket 28 (see Figure 3) which is made of a length of wire bent into acurved bail and pivoted at its ends to the opposite sides of the shell.Bracket 28 may be swung to the position shown in Figure 3 to provide arest for the upper shell or it may be swung to the nested position ofFigure 1 wherein its base snugly fits the outer surface of shell 2. Pan22 may be removed from rack [8 by pivoting the two rack members so thattheir sides are adjacent; that is, by hinging one around the other.

Special devices may be provided for use with or in place of pan 22. Forexample (see Figure 2), a bottle rack 32 may be provided which mayreplace grill 24 in pan 22. With bottle rack 32 in place and water inthe bottom of the pan, bottles are positioned in the rack as indicatedand sterilized by energizing bulb l4. A central cup 34 is fixed to rack32 and may hold caps or the like to be sterilized. The upper shell maybe used in the position shown in Figure 3 for general heating purposessuch as for drying hair or as a sun lamp.

As many possible embodiments may be made of the above invention and asmany changes might be made in the embodiment above set forth, it is tobe understood that all matter hereinabove set forth, or shown in theaccompanying drawing, is to be interpreted as illustrative and not in alimiting sense.

I claim:

1. In an electric cooker, the combination of, a substantiallycylindrical lower shell having a fiat bottom wall and having an axiallength less than its diameter, a cylindrical upper shell ofsubstantially the same diameter as said lower shell and having a beadedbottom edge telescoped within the top edge of said lower shell, saidupper shell having dome-like top wall connected to the main body of theshell by an annular shell portion of less diameter than the main body ofthe shell, a cross-frame supported by the upper portion of said lowershell, a pan supported by said cross-frame within said shells andpositioned at the telescoped portions thereof, an electric light bulbpositioned in the top portion of said upper shell and carried on theside wall thereof, a second electric light bulb positioned in said lowershell beneath said pan and supported on the side wall of the shell, asupporting shell enclosing said lower shell, and a bracket support forsaid upper shell comprising an elongated member pivoted at its ends tothe opposite sides of the upper shell and having straight portionsadjacent the pivots and a curved portion at its center with the curvedportion being of a curvature to extend more than half-way around saidupper shell.

2. Apparatus as described in claim 1, wherein said supporting shell hasa fiat bottom and provides a heat insulating space substantially aroundsaid lower shell.

3. In an electric cooker, the combination of, a substantiallycylindrical lower shell of highly polished sheet aluminum having a flatbottom wall and having an axial length less than its diameter, acylindrical upper shell of highly polished sheet aluminum ofsubstantially the same diameter as said lower shell and of substantiallygreater axial length, said upper and lower shells having telescopingends providing support for said upper shell, said upper shell having adome-like top wall connected to the main body of the shell by an annularshell portion, a cross-frame supported by the upper portion of saidlower shell and adapted to support a pan or the like positioned at thetelescoped portions of the shells, an electric light bulb positioned inthe top of said upper shell and carried by the wall thereof, a secondelectric light bulb positioned in said lower shell beneath said crossframe and carried by said lower shell, a supporting shell enclosing saidlower shell and providing a free space therearound whereby said lowershell is insulated, and a bracket support carried by said upper shelland providing for the support of said upper shell when said upper shellis removed from said lower shell.

GOTTLOB KLUMPP.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,630,237 Smith May 24, 19271,673,333 Klumpp June 12, 1928 1,969,614 Klopfenstein Aug. 7, 19342,291,359 Uhlrig et al July 28, 1942

